Adjustable brake-beam chair



Feb. 12, 1929. 1,701,923

A. w. HAWKINS ADJUSTABLE BRAKE BEAM CHAIR Filed March 12, 1925 2 Sheets-Sheet l Feb. 12, 1929.

A. W. HAWKINS ADJUSTABLE BRAKE BEAM CHAIR 2 Sheets-Sheet 2 Filed March 12; 1925 f, r. m

Patented Feb. 12, 1929.

UNITED STATESv PATENT OFFICE.

ARTHUR w. HAWKINS, or MusKnooN, innie-An; ASSIGNOB TO GHICAGU RAILWAY nearer/mm: COMPANY, or CHICAGO, ILLINGIS, n coaroanrron-or ILL-rivers;

ADJUSTABLE BRAKE-BEAM CHAIR.

Application filed March 12, 1925.

This invention relates to new and useful improvements 1n auxiliary brake beam sup.- ports, the object of the invention being to provide a chair or support member adapted beam as found in practice in the various car.

truck assemblies.

vVith these and other objects in View my invention consists in certain novel. features or construction and arrangement of parts, hereinaftermore fully described and claimed, and illustrated in the accompanying draw ings, in which Figure 1 is a side elevational view of a strut member of a brake beam with the tension member and the compression member of the latter in cross section and showing one form of. my improved chair carried by said strut member and engaging the support bar.

Figure 2 is a top plan view of one end of said strut member and the chair carried thereby.

Figure 8 is a perspective detail view of the chair.

Figure 4 is a fragmental View of one end of the strut member partly in cross section. and showing a modified form of chair mount= ed therein.

Figure 5 is a front elevational view of the same.

Figures 6 and 7 are detail views ofother modified forms of chairs.

Figure 8 is a. fragmental view of one end of the strut member provided with a chair having a ratchet engagement therewith.

Figure 9 is a top plan view of same.

Figure 10 is an end elevational view of a modified form of chair applied to the brake beam tension member.

Figure 11 is a side elevational view of same.

Figure 1.2 is another modified form of chair applied to a brake beam tension member.

Figure 13 is a perspective detail view of a Serial No. 14,979.

portion of a brake beam tension member and showing seats for receiving the upstanding legs of the chair.

Figures 14.- and 15 are end elevational and side elevational views, respectively, of another modified form of chair as applied to the brake beam tension member.

Figure 16 is a vertical cross section through one end of the strut member showing a modified form oi chair attached thereto.

Figure 17 is a horizontal cross section taken on line l7--17 of Figure 16.

Figure 18 is another modified form or" the chair or shoe member adapted to engage a brake beam part. i

In a copending application, Serial No. 11,978 filed February 27, 1925, I have disclosed a two-piece chair adjustable for positively varying the points of engagement of said chair with the brake beam part and the support bar, respectively, and this present application is directed more specifically to a one-piece chair adapted to be attached directly to the brake beam part proper and positively adjustable relative thereto.

Referring by numerals to the accompanying drawings, 10 indicates a car truck part, such as a spring plank to which is fixed a supportbar or track member 11 which may be either rigid or resilient as desired. 12 is the compression member, 14 tension. member and 15 strut member of a brake beam under which sald support bar 11 is disposed. The nose or extension end 16 of strut member 15- is provided with an extension 17 having a vertically disposed bore 18 which is adapted to receive the shank portion 19 of a chair or shoe member 20 which rests on support bar 11. Shank member 19 is provided with a series of horizontally disposed apertures 21 which are arranged in a vertical row and are adapted to be engaged by a cotter pin 22 seated in extension 17 andengaging one of said apertures for maintaining said shoe member in fixed relation with the strut member.

By withdrawing locking member 22, the shank 19 of shoe 20 may be moved upwardly or downwardly in extension 17 so as to ad just said shoe member in a vertical plane relative to the strut member 15. W hen the shoe member is properly positioned with respect to said strut member, cotter pin 22 is seated horizontally disposed bores adapted to receive a horizontally disposed pin 26 which is locked in position thereonby a cotter pin 27. A chair or shoe member 28 is provided with a shank portion 29 in which is formed a plurality of vertically arranged apertures 30 one of whichis engaged by pin 26 while the latter is seated'in position in extensions 24.

The width of shank 29 is such that the innerjside thereof is disposed close to tension member 14 and the-nose portion 16 so as to prevent rocking movement of said shoe member. about the axis of pin'26. V 5 y r In the form-shown inFigure 6, a chair or shoe member 31 is provided with a shank 32 inone side of which are disposed a plurality of horizontally arranged semi-circular seats 34 any. one of which is adapted to be engaged by a'pin seated in the extensions of 'the strut member so as to adjust said shoe member in vertical plane relative to the brake V beam.

The form shown in Figure 6 shows. a strut I member provided with an extension 35 having a vertically disposed bore therein .through which passes the threaded shank 36 of a shoe member 37. A pairof nuts 38 posed above and below extension 35' are screw-seated in shank 36 and hold shoe 37 in fixedfpo'sition on the strut member. By turning nuts '38 in the proper direction, shoe member' 37 may be adjusted vertically. Shank 36 is provided with a row of apertures 39 dispos'edin verticalplane and adapted to receive cotter pins 40 which lock said shank inposition. V i

In the'form shown in Figures 8 and 9 the strut member 14Vis provided with an extension 41 in which is seated a horizontally dise [posed spring pressed member 42 which is adapted to engage one of the seats 44 formed 1n shank 45 of a shoe member 46. A spring 47 bears against member 42 and holds it in .46. to thestrut member."

shankengaging position. Evy-engaging the freeend of this spring, member 42 may be moved out of engagement with shank 45 whereby shoe 46 can be adjusted in a vertical plane. When spring 47 is released, member 42 is moved into engagement withthe appropriate seat 44, thereby locking shoe member In the form shown in FigureslO and 11,

the tension member 14 is provided with a hor-' izontally disposed bore 48 through which passes a cotter pin 49 which is seated in a pair of coinciding apertures 50 formed in the parallel extensions 51 of a shoe member '52.

There are a series of apertures 50 disposed in vertical rows so that'shoe member 52 may be adjusted in vertical plane relative to tension member 14. 7 To prevent rocking movement of shoe member 52 about the axis of cotter pin 49, an auxiliary cotter pin 53 is seated in a coinciding pair of apertures 50 immediately' below cotter pin 49 and bears against the underside of tension'member 14 thereby holding extensions 51 against pivotal moveshoe member 54 in position on said tension member. The apertures 56 are spaced so as to permit adjustment of shoe member 54 in a vertical plane and at the same time maintain bolts 57 in close engagement with member 14; In order to prevent movement of shoe member 54 longitudinally of tension member 14,

the latter is preferably provided with verti cally disposed seats 14 as shown in Figure 13 which receive legs andprevent accidental horizontal movement thereof. I

The form shown in Figures 14 and 15 discloses a shoe member 58 having parallel upstanding portions 59 the sides of which are provided with open-ended slots 60 for receiv ing lateraband horizontal extensions 61 formed on tension member 14. These extensions are preferably elongated or non-circular in cross section and slots 60 are shaped in conformity therewith, thereby preventing pivotal movement of the shoe member 58. IVhen the legs 59 are disengaged from lateral extensions 61, shoe member 58 may be moved in vertical plane relative to tension member 14. To prevent disengagement of legs 59 and extensions 61, each leg 59 is provided with a bridge piece or closure member 62 which is pivotally attached to the respective leg 59, and siot60 is provided with a series of open-ended slots 65 which coincide with slots 60. The free end of member 62 is locked'to the respective leg 59 by suitable fastening devices 66, thereby closing the open-ended slot 60 and locking extensions 61 in their respective slots.

In the form shown in Figures 16 and 17, the bifurcated nose portions of strut member 15 have non-rotatably seated therein pin 67, the intermediate portion of which is formed non-circular in cross section and preferably squareas shown in' Figure 16. Adapted to engage this non-circular intermediate portion of pin 67 are oppositely disposed V-shaped seats 68 formed in the opposed faces of vertically disposed plates 69 and 70, respectively. Plate 69 is formed integral with a shoe member 71 and plate is pivotally connected at its lower'end to plate 69 as indicated at 72 i and the upper end of plate 70 issecured to plate 69 by means of a nut and bolt 73 or other suitable fastening device. To ad ust the shoe member 71 vertically, fastening device 73 is removed to disengage pivotal plate from plate 69, whereupon shoe member 71 may be moved to one side so as to permit the V- shaped seats thereof to clear the pin 67. When shoe member 71 is located in proper posit-ion, pivotal plate 70 is closed against plate 69 with the non-circular portion of p n 67 engaging the respective seats ot sa1d plates. Plate 70 is now locked in position b fastening devices 78, thereby securing the sli oe member in fixed position on the strut member 15.

In Figure 18 is shown a chair member consisting of a shoe 74L having formed integral therewith and projecting upwardly therefrom a pair of parallel legs 75, the opposed faces of Which are provided with a series of coinciding, horizontally disposed arcuate seats or depressions 7 6 for engaging the tension member 14 of the brake beam. The seats 76 of each row are disposed in a vertical plane so that the point oi engagement between the chair and the brake beam member can be adjusted vertically. The legs are clamped to the brake beam part by fastening device 77.

I claim:

1. A single piece rigid sliding chair for brake beams having a plurality of brake beam parts engaging seats disposed in a vertical plane, for selectively securing said chair on said brake beam part at difierent horizontal planes. 7

2. A one-piece rigid chair for brake beams comprising a shoe for slidably engaging a support bar and a body having a plurality of brake beam part engaging seats disposed in a vertical plane, and means for selectively interlocking one of said seats with said brake beam part.

A rigid brake beam chair comprising a sliding shoe member and an upright shank thereon provided with a plurality of seats adapted to positively engage a brake beam part, said seats being disposed in a vertical plane for selectively varying the points of engagement of said chair with the parts with which said chair is associated.

a. A brake beam auxiliary support comprising a brake beam part, a safety support bar fixed to a car truck part, and a rigid chair slidably arranged on said support bar and provided with a vertical extension having formed therein a series of seats spaced in verti cal plane from each other for selectively engaging said brake beam part, said seats being disposed so as to permit said chair to vary its fixed point of engagement with said brake beam part in a vertical plane.

5. A brake beam auxiliary support comprising a brake beam part, a safety support bar fixed to a car truck part, a rigid chair slidably arranged on said support bar and provided with a vertical extension formed therein a series oi'seats spaced in vertical plane for selectively engaging said brake beam part, said seats being disposed so as to permit said chair to vary its fixed point of engagement with said brake beam part in a vertical plane, and a displaceable member cooperating with said vertical extension for interlocking said chair with said brake beam part.

6. In a brake beam construction, the combination with a brake beam part and a car truck part underlying said brake beam part, of a rigid chair member provided with a shoe portion for resting 011 and moving along said car truck part and having an integral extension provided with series of seats disposed in a vertical plane, and a member fixed to said brake beam part and adapted to be engaged by any one of said seats for selectively positioning said shoe portion with respect to said brake beam part to fixedly interlock said chair member with said brake beam part.

7. In a third point support for brake beams,

the combination with a brake beam strut.

member, of a rigid chair or supportmember adapted to slidably engage a car truck part and provided with a plurality of seats for fixedly engaging said strut member, said seats being disposed in a vertical plane to fixedly adjust said chair relative to said strut member.

8. In a third point support for brake beams, the combination of a brake beam strut memher, a rigid chair or support member adapted to be supported on a car truck part and provided with a plurality of seats disposed in a vertical plane, and means carried by said strut member for fixedly engaging any one of said seats whereby said chair can be fixedly adj usted relative to said strut member.

9. A device comprising a brake beam chair sliding shoe member having a rigid upright shank provided with a plurality of seats adapted te positively engage a brake beam part, said seats being" arranged vertically for selectively varying the points of engagement of said chair with the parts with which the chair is associated and means for attaching said chair to a brake beam.

10. In a brake structure, a brake beam part, a truck part underlying said brake beam part, a rigid chair member provided with a shoe for slidably engaging id truck part and having an integral extension provided. with a series of seats arranged vertically and each adapt ed to engage said bralre'beam part, and means for interlocking said chair with said brake beam part whereby said brake beam part may be selectively positioned at the desired height above said truck part.

in testimony whereof I hereunto affix my signature thisfith day of March, 1925.

ARTHUR W. HAWKINS. 

